chore: removing 'version' from docker-compose.yml file

[mukesh1811]

What does this PR do?

removed 'version' tag from docker-compose.yml file as 'version' was made obsolete
reference

Type of change

• Bug fix (non-breaking change which fixes an issue)

Mandatory Tasks

• Make sure you have self-reviewed the code. A decent size PR without self-review might be rejected.

[vercel]

@mukesh1811 is attempting to deploy a commit to the langfuse Team on Vercel.

A member of the Team first needs to authorize it.

[CLAassistant]

All committers have signed the CLA.

[marcklingen]

thanks! as version 2 completely ignores the version and has been released a long time ago, this is safe to be removed. merging now.

from faq:

Version two of the Docker Compose command-line binary was announced in 2020, is written in Go, and is invoked with docker compose. Compose V2 ignores the version top-level element in the compose.yml file.